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If he really thinks it’s a problem, then he should sue and not leave it to others who likely don’t have standing.

Washington (CNN)Donald Trump on Friday threatened to sue Ted Cruz for “not being a natural born citizen” if the Texas senator “doesn’t clean up his act” and stop running negative ads against him.

“If @TedCruz doesn’t clean up his act, stop cheating, & doing negative ads, I have standing to sue him for not being a natural born citizen,” he tweeted.

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